4-PLEX VERSUS 8-PLEX FINANCING

[N/A N/A]

I have been looking at a number of multi-family units and have found one listed: 2 buildings with 4 units in each building. In discussing with the listing realtor, I was told by the realtor that the building are more valuable separately as 2-four plexes than as one eight plex but that it is not deeded as such. He advised that the owner is willing to hold the property with a down payment if I am willing to pursue the separation of the deeds. Although I am not considering making an offer, I though I could bring this question to the group to learn a little bit more about such.
1. I gather that financing for 4-units and under might qualify for residential while more units might not. What is the difference in this financing?
2. If such building are to be deeded separately - what is the process and who should be responsible for it?
3. Assuming that i purchased such a single deeded eight plex - could i then accomplish the separation of the deeds such that i could sell them off separately?

Thanks folks.